



   PageHeap::GrowHeap/MetaDataAlloc
   TCMalloc_SystemAlloc
   -> InitSystemAllocators
      ->



  TCMallocGuard::TCMallocGuard()
  ThreadCachePtr::InitThreadCachePtrLate
  ThreadCachePtr ThreadCachePtr::DoGetSlow() NO_THREAD_SAFETY_ANALYSIS
  class:ThreadCache
  ThreadCache::ThreadCache
  ThreadCache::InitModule
  InitStaticVars
  namespace tcmalloc {
  class PageHeapAllocator




   class TCMallocGuard
   -> TCMallocGuard
      -> ReplaceSystemAlloc
      -> MallocExtension::instance
      -> tc_malloc
      |  -> malloc_fast_path<tcmalloc::malloc_oom>(size)
